Shares of Western Union continued to climb Monday, gaining 5%, after an unconfirmed report circulated on Friday saying the 167-year-old money-transfer company was planning to use Ripple’s XRP cryptocurrency.

Both companies officially declined to comment, but neither outright denied the possibility.

WU - % - Friday - Morning - Trading

WU is now up more than 11% since Friday morning, trading at $21.64 Monday afternoon.